This question is not limited to Christians (even though it seems so) or to any belief or lack thereof but it's rather question of existence or nonexistence of God.
There are many truths about all sorts of things, but when speaking about "truth" I mean the Jesus' role in proclaiming truth,
or more specifically Pilate style curiosity when he asked Jesus "what is truth?", after all Pilates knew the role of Jesus.
In regard to Jesus' role but regardless of your belief in Jesus, "truth" is therefore an answer to existence of God, that is, God either exists or it does not, there is no 3rd option.
If God exists OK because we live for ever, if not we're doomed because there is no life after death as simple as that and that's what's meant by "truth" and what it reveals.
"truth" also literary means something that is true, therefore "truth" in this context unambiguously either reveals God exists or it reveals God does not exist,
thus it's a two edge sword meaning both sides can wound or both can tell the truth.
Truth about existence of God is thus transformative, because it is capable to convert non-believers to believers and vice versa depending on what the truth reveals.
That's what I mean by "truth".
However the fact is that we're not all believers nor we're all atheists, therefore there are only three logical hypotheses about mystery of truth:
1.) truth is not known
2.) truth is esoteric
3.) well known but not universally believable
And this begs the question on whether the truth is personal?
As you can see for yourself all 3 hypotheses imply truth is personal.
But that's a problem because if truth is personal then how it can be "truth", are you not lying to yourself?
Therefore truth is paradoxically also not personal!
Do you think truth is personal?